1.75 Kr.
International registered air mail letter to North America (category IIIa) and to some countries
in Asia (category IVe) 15 < 20 gr.
Postage rate 30 öre, registered mail fee 25 öre and air mail fee 120 öre
Registered mail label type 5:1 and air mail label type 5. Arrival postmark: Crystal Lake 19/02/50
01/12/49 - 31/05/51